Pullout Strength Models for FRP Anchors in Uncracked Concrete
Publication: Journal of Composites for Construction
Volume 14, Issue 4
Abstract
Mechanical anchorage can delay or even prevent premature debonding failure in externally bonded fiber-reinforced polymer (FRP) composite strengthening systems. A promising type of anchor made from FRP, which is known as a FRP spike anchor or FRP anchor among other names, is noncorrosive and can be applied to a wide range of structural elements and externally bonded FRP strengthening schemes. Experimental investigations have shown FRP anchors to be effective under tension (pullout) and shear loading, however, few analytical models exist to date. This paper in turn presents analytical models to quantify the pullout strength of FRP anchors. As existing research on the pullout behavior of metallic anchors is partially relevant to FRP anchors, this paper first presents a review of current pullout strength models for metallic anchors. These models are then assessed with experimental data of FRP anchors and modified and recalibrated where appropriate. As a result, simple and rational pullout strength models for FRP anchors are proposed which can also be used in design. Finally, parametric studies are undertaken and the influence of key variables is identified.
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Acknowledgments
Funding provided by the Hong Kong Research Grants Council in the form of General Research Fund UNSPECIFIEDHKU 715907E is gratefully acknowledged.
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Information & Authors
Information
Published In
Journal of Composites for Construction
Volume 14 • Issue 4 • August 2010
Pages: 406 - 414
Copyright
© 2010 ASCE.
History
Received: Jan 23, 2009
Accepted: Nov 22, 2009
Published online: Feb 3, 2010
Published in print: Aug 2010
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